Weaning baby off breast...this is a nightmare!!!

For a week now I’ve been trying to wean my 12 month old off my breast. I hardly have any milk anymore. Whenever I pump, nothing seems to come out anymore/ I have a little freezer stash. So I’ve been using that to mix the milk. My son drinks half the bottle then screams and cries and pushes it away for a long ass time. Idk what to do!!!!

He goes for my boob; but I don’t want him to get used to it for one, and two I literally have nothing left. Half an ounce if I’m lucky!!!

Suggestion? Tips? Advice? Help!